Move sdl2 installation docs to separate files

README.md

@@ -6,42 +6,7 @@ Adapted from http://lazyfoo.net/tutorials/SDL/
   The tutorial requires that SDL2, SDL2 Image, and SDL2 TTF are installed before
   running the examples.
 
-### Mac OS X
-
-Mac OS X requires each library to be downloaded and copied to
-$HOME/Library/Frameworks or /Library/Frameworks.
-
- Library Name | Download Link
- ------------ | -------------
- SDL2         | https://www.libsdl.org/download-2.0.php
- SDL2 Image   | https://www.libsdl.org/projects/SDL_image
- SDL2 TTF     | https://www.libsdl.org/projects/SDL_ttf
-
-Running the tutorials will cause Catalina to report that the framework cannot be
-opened because the developer cannot be verified. The workaround for this problem
-is the following:
-
-1. Navigate to System Preferences -> Security & Privacy -> General on the Mac
-
-2. Run repl.sh
-
-3. When the dialog appears about the developer not being verified, click the
-"Cancel" button.
-
-4. Examine the Security & Privacy screen for a button called "Allow Anyway" for
-the framework. Click the "Allow Anyway" button with the identified framework.
-
-5. The verification dialog will now appear a second time, but there will be an
-option to "Open" the framework. Click "Open".
-
-6. Repeat steps 3 through 5 for the different frameworks.
-
-### Linux
-
-The SDL2 libraries can be installed on a Debian based system with the command
-below.
-
-	apt install libsdl2-2.0 libsdl2-image-2.0 libsdl2-ttf-2.0
+  See instructions for [Linux](README_LINUX.md) and [macOS](README_MACOS.md) respectively.
 
 
 ## Installation
@@ -52,9 +17,17 @@ git clone https://github.com/TatriX/cl-sdl2-tutorial/ ~/quicklisp/local-projects
 ```
 
 ```lisp
-> (ql:quickload :sdl2-tutorial)
+(ql:quickload :sdl2-tutorial)
+```
+
+or [asdf](https://common-lisp.net/project/asdf/)
+```
+git clone https://github.com/TatriX/cl-sdl2-tutorial/ ~/common-lisp
 ```
 
+```lisp
+(asdf:load-system "sdl2-tutorial")
+```
 
 ## Running the Examples
 

README_LINUX.md

@@ -0,0 +1,12 @@
+## Installing the SDL2 Libraries Linux
+
+## Debian
+
+The SDL2 libraries can be installed on a Debian based system with the command
+below.
+
+	apt install libsdl2-2.0 libsdl2-image-2.0 libsdl2-ttf-2.0
+
+## Arch
+
+    sudo pacman -S sdl2 sdl2_image sdl2_ttf

README_MACOS.md

@@ -0,0 +1,29 @@
+### Mac OS X
+
+Mac OS X requires each library to be downloaded and copied to
+$HOME/Library/Frameworks or /Library/Frameworks.
+
+ Library Name | Download Link
+ ------------ | -------------
+ SDL2         | https://www.libsdl.org/download-2.0.php
+ SDL2 Image   | https://www.libsdl.org/projects/SDL_image
+ SDL2 TTF     | https://www.libsdl.org/projects/SDL_ttf
+
+Running the tutorials will cause Catalina to report that the framework cannot be
+opened because the developer cannot be verified. The workaround for this problem
+is the following:
+
+1. Navigate to System Preferences -> Security & Privacy -> General on the Mac
+
+2. Run repl.sh
+
+3. When the dialog appears about the developer not being verified, click the
+"Cancel" button.
+
+4. Examine the Security & Privacy screen for a button called "Allow Anyway" for
+the framework. Click the "Allow Anyway" button with the identified framework.
+
+5. The verification dialog will now appear a second time, but there will be an
+option to "Open" the framework. Click "Open".
+
+6. Repeat steps 3 through 5 for the different frameworks.